EP1185998A1 - Dispositif de fixation en position correcte d'une plaquette de circuits imprimes - Google Patents

Dispositif de fixation en position correcte d'une plaquette de circuits imprimes

Info

Publication number
EP1185998A1
EP1185998A1 EP01915364A EP01915364A EP1185998A1 EP 1185998 A1 EP1185998 A1 EP 1185998A1 EP 01915364 A EP01915364 A EP 01915364A EP 01915364 A EP01915364 A EP 01915364A EP 1185998 A1 EP1185998 A1 EP 1185998A1
Authority
EP
European Patent Office
Prior art keywords
circuit board
printed circuit
carrier
guides
cover
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP01915364A
Other languages
German (de)
English (en)
Other versions
EP1185998B1 (fr
Inventor
Zoltan Giday
Burkhard Hess
Hans-Jürgen SCHWIENKE
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AEG Niederspannungstechnik GmbH and Co KG
Original Assignee
AEG Niederspannungstechnik GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by AEG Niederspannungstechnik GmbH and Co KG filed Critical AEG Niederspannungstechnik GmbH and Co KG
Publication of EP1185998A1 publication Critical patent/EP1185998A1/fr
Application granted granted Critical
Publication of EP1185998B1 publication Critical patent/EP1185998B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/14—Mounting supporting structure in casing or on frame or rack
    • H05K7/1417—Mounting supporting structure in casing or on frame or rack having securing means for mounting boards, plates or wiring boards
    • H05K7/142—Spacers not being card guides
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/123—Automatic release mechanisms with or without manual release using a solid-state trip unit

Definitions

  • the present invention relates to a device for the correct mounting of a printed circuit board between housing parts to be assembled.
  • circuit boards are now used which carry the corresponding electrical components.
  • circuit boards are generally integrated into housings, so that they are enclosed by the housing.
  • the printed circuit boards are often not the entire electrical component of an electrical device, but other electrical components are to be connected to the printed circuit board. These components are usually housed in or arranged on the same housing.
  • the housing is usually formed from a carrier which receives the printed circuit board and possibly further electrical components and a cover which surrounds the printed circuit board.
  • a carrier which receives the printed circuit board and possibly further electrical components and a cover which surrounds the printed circuit board.
  • other components can also be plugged into the circuit board later by inserting a plug through an opening in the cover and inserting it into a suitable socket on the circuit board.
  • a further circuit board or a further circuit can be attached to this connector in order to adapt the device to its end purpose by plugging in different circuit boards or circuits.
  • circuit board is connected directly to the carrier, tolerances of the individual may differ
  • the aforementioned positional relationship can be ensured by screwing the circuit board to the cover before the cover is connected to the carrier, but usually the carrier contains further electrical / electronic components, which are to be connected to the circuit board.
  • the carrier contains further electrical / electronic components, which are to be connected to the circuit board.
  • the aim of the invention is to propose a device for the correct mounting of a circuit board, in particular for a trip unit of a circuit breaker, between housing parts to be assembled, which enables simple, fast and inexpensive mounting of the circuit board in the housing parts.
  • the object is achieved with a device according to the features of claim 1.
  • the device comprises the printed circuit board between assembled housing parts, such as a carrier and a cover, and guides provided on the carrier and which engage with guide receptacles of the printed circuit board. Furthermore, at least one resilient element is provided, which prestresses the circuit board in the direction of extension of the guides. A stop formed on the cover acts on the circuit board against the force of the resilient element.
  • a so-called floating mounting of the circuit board between the housings can be achieved by the device.
  • the circuit board In this storage, the circuit board is guided on guides and biased towards the cover by the resilient element.
  • a stop provided on the lid comes into contact with the printed circuit board and presses it against the force of the resilient element in the direction of the carrier.
  • the prestressing of the circuit board in the direction of the cover always ensures that the stop abuts the circuit board.
  • the positional relationship between the circuit board and the cover is only determined by this stop, which can preferably itself be part of the cover.
  • the location relationship is of others Tolerant dimensions, in particular, regardless of the thickness of the circuit board.
  • the invention is suitable for a variety of electrical devices; it is particularly suitable for
  • Tripping units for circuit breakers that are produced in large numbers. These trigger units can be provided with the same circuit board for different trigger characteristics and power ranges as a basic device, which can then be adapted to its end purpose, for example by plugging another element onto the circuit board or by setting elements on the circuit board.
  • the circuit board is initially held on the carrier by the interaction of the guides on the carrier and / or the guide receptacles.
  • electrical components arranged on the carrier can be connected to the printed circuit board without the access to the printed circuit board being restricted by the cover.
  • the mechanical connection between the printed circuit board and the carrier is thus already established, so that simple and inexpensive connection techniques (for example crimping or crimping connections) are sufficient for connecting the electrical components to the printed circuit board.
  • the lines of the electrical components of the carrier can be dimensioned such that their length is just sufficient for connecting the electrical components to the printed circuit board.
  • Figure 1 is a partially cutaway perspective view of a trip unit as an embodiment of the invention.
  • FIG. 2 shows a detail from FIG. 1, likewise in a partially cut-away perspective view
  • Fig. 3 is a sectional view of the trip unit of Fig. 1;
  • FIG. 4 is an exploded perspective view of the release unit from FIG. 1.
  • Fig. 1 shows a trigger unit 1, in which a circuit board 6 between a carrier 4 and a
  • Fig. 2 shows an enlarged section of the upper right corner in Fig. 1, on the basis of which the operation of the device according to the invention will be explained.
  • the circuit board 6 is guided over guides 8 and placed on the carrier 4.
  • a coil spring 10 is shown in the compressed state.
  • the pin-shaped guide 8 is provided with a locking lug 12 which prevents the printed circuit board 6 from being released from the guide 8 as a result of the force of the spring 10.
  • a stop 14 is formed on the cover 2, which in this embodiment has a tubular shape. This stop 14 engages around the guide 8 when the cover 2 is in place. The lower end of the stop 14, which can be seen better in FIG. 1, lies on the printed circuit board 6.
  • This tubular shape of the stop 14 has the advantage that only a small bending load is applied to the circuit board because the stop 14 acts essentially coaxially on the coil spring 10 with the circuit board being interposed.
  • FIG. 2 is formed on the carrier 4.
  • a suitable recess (not shown) in the cover 2 is designed to receive the locking lug 22 shown in FIG. 2 in the assembled state of the cover 2.
  • the cover placed on the carrier 4 from above snaps in this position by means of the latch 22 on the carrier 4.
  • a plurality of locking lugs 22 can be provided on the carrier, as can be seen for example from FIG. 1.
  • the force and the diameter of the spiral spring 10 are dimensioned such that the force of the spring 10 is sufficient to press the circuit board 6 against the stop 14 of the cover 2 with sufficient force.
  • the diameter of the spiral spring 10 is selected such that it can be placed on the guide 8 by passing the locking lug 12 in FIG. 2 and is held there captively by the locking lug 12 in the attached state.
  • the force of the spring is also dimensioned so that the circuit board 6 by hand, i.e. without further tools, can be pressed onto the guides 8 until it has passed the locking lugs 12 and is thereby held on the guides 8.
  • FIG. 3 shows a sectional view of the trigger unit 1 shown in FIG. 1.
  • a support 18 is formed on the carrier 4, which can come into engagement from the side of the carrier 4 with the circuit board 6 in the assembled state when the circuit board 6 is pressed down against the force of the coil spring 10. Because concentrated force is exerted on this point when the cover 2 is latched onto the latching lugs 22 of the carrier 4, here the support 18 is formed in one piece with the latching lug 22.
  • a support 16 is shown in FIG. 3, which supports the printed circuit board 6 approximately in the middle. With the support 16 it is avoided that the circuit board 6 is strongly bent when inserting an area setting element 20 or when actuating the setting pins 26 or 30, as a result of which the conductor tracks or the elements located on the circuit board could be destroyed or damaged.
  • the distance X to be maintained between the cover 2 and the printed circuit board 6 is determined by the length of the stop 14 in FIGS. 1 and 2, so that deviations in thickness of the printed circuit board 6 or dimensional deviations of the carrier 4 have no influence have the nominal distance marked X between the circuit board 6 and the cover 2.
  • Fig. 4 shows a carrier 4, which has a substantially cuboid shape.
  • the carrier has a generally C-shaped profile which is delimited by a base wall on the rear side shown in FIG. 4 and by walls adjoining the upper and lower edges of the base wall.
  • Partition walls, which delimit niches, extend essentially between the two walls in the vertical direction in FIG. 4.
  • the niches are designed to accommodate the current transformers 34 shown in FIG. 4.
  • the dividing walls are curved to match the contour of the current transformers.
  • Guides 8 are formed on the upper of the two walls.
  • the guides are substantially cylindrical in shape and extend perpendicular to the major plane of the top wall. Furthermore, a support (16 in Fig. 3) is formed on the upper wall. The support has the shape of a web or a plate, the end face of which forms a contact surface. Furthermore, a receptacle for a switching rocker shown in FIG. 4 is formed on the upper wall, but this is not explained in more detail here.
  • the circuit board 6 is equipped with electrical or electronic components, which are shown only schematically here.
  • an adjusting member is shown, on which the adjusting pin 30 can be placed, so that it extends vertically upwards with respect to the printed circuit board 6.
  • the circuit board 6 has a bore 32 in two diagonally opposite corners.
  • the bore 32 is a through bore, which is dimensioned such that the
  • FIG. 4 shows the reverse movement, that is to say the removal of the printed circuit board 6 from the guides 8 upwards in FIG. 4, is prevented by the latching lugs 12, which each engage the edge of the bores 32. Furthermore, Fig. 4 shows the coil springs 10, which also pass through the locking lugs 12 on the Guides 8 can be plugged in and are held in this position by the locking lugs 12.
  • a lid 2 is shown in FIG. 4 above the circuit board 6.
  • the lid is essentially box-shaped and is open on its lower side in FIG. 4.
  • the cover 2 is designed to be put over the circuit board and brought into engagement with the carrier. In the installed position, the cover is held with locking means (not shown here).
  • An area setting element 20 is indicated above the cover 2 in FIG. 4. This range setting element can be connected to the printed circuit board 6 by leading it through an opening provided in the cover in FIG. 4 from above through the cover and plugging it onto the printed circuit board. Above the
  • Area setting element 20 is also indicated in FIG. 4, a protective cap which can be inserted into the aforementioned opening of the cover.
  • Protective cap may have openings to allow access to the area adjustment element. It can of course also be a closed protective cap, which can also be inserted if no area setting element is provided in order to close the aforementioned opening in the cover 2.
  • the protective cap is provided with latching means, which can be designed to be detachable or non-detachable. This may prevent unauthorized access to the area setting element.
  • a flap is shown together with two hinge elements. The hinge elements can be placed along the dash-dotted line parallel to the flap on pins formed on the flap. The hinge elements can be inserted into openings provided on the top of the cover and fastened therein. Thus, a flap for covering the top of the lid can be easily provided on the lid 2.
  • the guides 8 are formed on the carrier 4 with the locking lugs 12.
  • the carrier 4 is designed to accommodate so-called current transformers 34, which are to be electrically connected to the printed circuit board 6.
  • the coil spring is designated by 10
  • bores formed in the printed circuit board 6 as the guide receptacles are designated by 32.
  • the bores 32 are formed at two diagonally opposite corners of the printed circuit board 6.
  • the corresponding guides 8 are formed on the carrier 4. Two of the guides which cooperate with the holes 32 in the printed circuit board 6 have proven to be sufficient, but more than 2 guides and associated holes can also be provided in the printed circuit board.
  • FIG. 4 also shows the cover 2 to be put over the assembly consisting of carrier 4 and printed circuit board 6.
  • FIG. 4 shows the area setting element 20 which can be found in Fig. 3. As can be seen from FIG. 3, the area setting element 20 is provided on its underside with a plug (only shown schematically) in order to be plugged onto the printed circuit board 6 and to extend parallel to the latter. The area setting element 20 serves to adapt the circuit board 6 to a desired mode of operation of the trigger unit 1.
  • a carrier 4 is provided on its guides 8 with coil springs 10 and the current transformers 34 are inserted into the associated niches in the carrier 4. Subsequently, the circuit board 6 with its holes 32 is guided over the guides 8 and pressed in the direction of the carrier until the latches 12 lock on the upper side of the circuit board 6 in FIG. 4. As a result, the circuit board is initially held mechanically securely on the carrier 4.
  • Current transformers 34 take place by connecting wires or lead wires (not shown) provided on the current transformers 34 to suitable connection points on the printed circuit board 6. Because the mechanical assignment between the current transformers 34 and the printed circuit board 6 is already determined by their respective connection to the carrier 4 thin and dimensionally dimensioned current wires are used for the connection.
  • connection techniques can be used for the line connection or the electrical connection of the line wires to the printed circuit board 6; these are in particular the crimping technique or a crimp connection technique. In other words, an expensive, complex hand soldering that meets special strength criteria is not required. Because the circuit board 6 and the current transformers 34 are essentially firmly assigned to one another, correspondingly short lead wires can be used, the placement of which in the housing or in the carrier presents no difficulties.
  • the cover 2 is then placed over the circuit board from above, the stop 14 being brought or put over the guides 8, as shown in FIG. 1. Following this guidance, the cover is pressed down against the force of the two spiral springs 10 until the detents 22 according to FIG. 2 snap into associated recesses (not shown) in the cover 2.
  • the corresponding area setting elements 20 can be plugged onto the printed circuit board 6 through the opening designated 28 in FIG. 1. Further setting elements, test elements, etc. can also be connected to the circuit board, this can for example through the opening 38 in FIG. 2.
  • a flap with suitable hinges can optionally be placed on the assembly so assembled.
  • the pin-shaped guides 8 in the previous exemplary embodiment can be replaced, for example, by tabs which extend away from the carrier and guide the printed circuit board on its side edges.
  • the tabs can be individual tabs, but it is also possible to provide corresponding angular profiles at, for example, two corners of the circuit board, which simultaneously capture two side edges of the circuit board. It is also possible to provide, for example, a guide profile on both narrow sides of the printed circuit board, which also detects and guides the entire narrow side and a section of the side edges adjoining it.
  • the coil spring 10 as the resilient element can also be replaced by equivalent means.
  • this can be a spring element attached to the side of the printed circuit board facing the carrier, such as a spring element or a plurality of spring clips or tongues which are " riveted or soldered to the printed circuit board.
  • a resilient plastic element or a spring clip can be directly formed or molded on, so that the number of parts is further reduced.
  • the locking device on the guides can be, for example, one in the previous one
  • Exemplary embodiment shown locking lug on the guides can be used for such locking devices on the guides.
  • other fastening means can also be used to fix the circuit board to the guides. These also include deforming the tip end of the guides after placing the circuit board on the guides. The deformation can also be carried out by deliberately softening the material of the guides (hot forming) and then deforming the softened section.

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Casings For Electric Apparatus (AREA)
  • Mounting Of Printed Circuit Boards And The Like (AREA)

Abstract

L'invention concerne un dispositif de fixation en position correcte d'une plaquette de circuits imprimés (6) entre des parties de boîtier assemblées, par exemple un support (4) et un couvercle (2). Des guides (8) présents sur le support sont en prise avec des récepteurs de guides (32) de la plaquette de circuits imprimés. Par ailleurs, au moins un élément ressort (10) comprime la plaquette de circuits imprimés contre le couvercle. Une butée (14) formée sur le couvercle reçoit la plaquette de circuits imprimés contre la force de l'élément ressort, et crée ainsi un logement flottant de la plaquette de circuits imprimés entre les parties de boîtier. La plaquette de circuits imprimés s'appuie en continu contre la butée. Ainsi, il est possible de garantir le positionnement correct de la plaquette de circuits imprimés par rapport au couvercle. Ledit dispositif de fixation peut en particulier être utilisé dans un dispositif de déclenchement d'un disjoncteur.
EP01915364A 2000-03-17 2001-03-16 Dispositif de fixation en position correcte d'une plaquette de circuits imprimes Expired - Lifetime EP1185998B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10013116A DE10013116B4 (de) 2000-03-17 2000-03-17 Vorrichtung zur lagerichtigen Befestigung einer Leiterplatte
DE10013116 2000-03-17
PCT/EP2001/003038 WO2001069629A1 (fr) 2000-03-17 2001-03-16 Dispositif de fixation en position correcte d'une plaquette de circuits imprimes

Publications (2)

Publication Number Publication Date
EP1185998A1 true EP1185998A1 (fr) 2002-03-13
EP1185998B1 EP1185998B1 (fr) 2008-10-08

Family

ID=7635165

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01915364A Expired - Lifetime EP1185998B1 (fr) 2000-03-17 2001-03-16 Dispositif de fixation en position correcte d'une plaquette de circuits imprimes

Country Status (5)

Country Link
EP (1) EP1185998B1 (fr)
DE (1) DE10013116B4 (fr)
HU (1) HUP0201318A2 (fr)
PL (1) PL350767A1 (fr)
WO (1) WO2001069629A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10159063B4 (de) * 2001-12-01 2020-06-10 HELLA GmbH & Co. KGaA Vorrichtung zur lagerichtigen Befestigung einer Leiterplatte
DE10161173C1 (de) * 2001-12-13 2003-07-17 Hella Kg Hueck & Co Vorrichtung zur lagerichtigen Befestigung einer Leiterplatte
DE102006034923A1 (de) * 2006-07-28 2008-01-31 Jungheinrich Ag Gehäuse für eine Steuerung
DE102007046448B4 (de) * 2007-09-28 2012-09-20 Gigaset Communications Gmbh Montagesystem für elektrotechnische Geräte
US8487724B2 (en) * 2010-11-23 2013-07-16 Schneider Electric USA, Inc. Fully enclosed electronic trip unit for a molded case circuit breaker

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4281359A (en) * 1980-03-14 1981-07-28 General Electric Company Static trip unit for molded case circuit breakers
DE3829649A1 (de) * 1988-09-01 1990-03-15 Standard Elektrik Lorenz Ag Elektrische baueinheit
FR2671228B1 (fr) * 1990-12-26 1996-07-26 Merlin Gerin Disjoncteur comportant une carte d'interface avec un declencheur.
DE9112371U1 (de) * 1991-10-04 1993-02-11 E.G.O. Elektro-Geräte Blanc u. Fischer, 7519 Oberderdingen Befestigung zweier Platinen aneinander
US5258889A (en) * 1992-09-28 1993-11-02 Ford Motor Company Apparatus for compliantly retaining a circuit board in a housing
DE19712099A1 (de) * 1997-03-22 1998-05-14 Bosch Gmbh Robert Gehäuse für ein elektrisches Gerät
US6058024A (en) * 1997-07-17 2000-05-02 Tektronix, Inc. Electronic instrument with electromagnetic interference shield and method of manufacturing
DE29815003U1 (de) * 1998-08-21 1998-10-08 Stiebel Eltron Gmbh & Co Kg, 37603 Holzminden Elektrisches Gerät

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0169629A1 *

Also Published As

Publication number Publication date
HUP0201318A2 (en) 2002-08-28
DE10013116A1 (de) 2001-10-04
EP1185998B1 (fr) 2008-10-08
PL350767A1 (en) 2003-01-27
DE10013116B4 (de) 2008-01-03
WO2001069629A1 (fr) 2001-09-20

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